BORA Lite SOM/BELK-L/General/Release Notes
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| Version | Issue Date | Notes | |
| 1.0.0 | Sep 2021 | belk-4.1.5 | |
Contents
Release Notes[edit | edit source]
DAVE Embedded Systems adds to the latest Linux BSP from Xilinx the customization required to support the SOC platform. For this reason most of the documentation provided by Xilinx remains valid for the BELK development kit.
However, some customization is required, in particular at bootloader and linux kernel levels.
The following table reports the BELK releases information.
| BELK version | |
|---|---|
| Release number | 4.1.5 |
| Release type | Minor (base on BELK 4.0.0 major release) |
| Status | Released |
| Release date | Sep 2021 |
| Release notes | Ver 4.1.5 |
| Product support | BORA Lite |
| MVM (distro version) | Ubuntu 16.04 |
| U-Boot version | 2017.01-belk-4.1.5 |
| Linux version | 4.9.0-bora-4.1.4 |
| Drivers |
SPI NOR Flash (boot) Ethernet0 gigabit |
| Vivado version | 2017.1 |
| Build System | Yocto Morty (2.2) |
BELK 4.1.5[edit | edit source]
 New MVM must be installed for using BELK-4.1.0. The VM is available for download on DAVE's BORA Reserved Area for registered users. |
Release notes:
- Updated u-boot version for BORA Lite support (updated defconfig for NOR and SD boot)
Known Limitations[edit | edit source]
The following table reports the known limitations of this BELK release:
| ID | Component | Subsystem | Description |
|---|---|---|---|
| 0002 | BoraXEVB | ETH1 interface | Please refer to this application note for second Ethernet interface support. For applying the AN on BTELK, the BORA Lite adapter should be properly modified. For more details please refer to DAVE Helpdesk |
| 0003 | BoraXEVB | RTC | Date/time retention is limited to about 4 hours. |
| 0004 | BoraXEVB | System clock runs slower | As per Xilinx issue, @333MHz (speedgrade -3) system clock is slower then expected |
| 006 | BoraXEVB | Watchdog | It is not possible to configure the watchdog settings using S1, S2 and S3 settings.
The watchdog parameters are fixed on BORA Lite SOM: please contact Helpdesk for more information |
| 007 | BoraXEVB | LVDS/touchhscreen | BORA Lite adpater is configured for accessing the PMOD-Aperipheral: the LVDS and touchscreen usage is available only with a proper modification of BORA Lite adapter mounting option. |
Downloadable binary images[edit | edit source]
All binary images for BELK are hosted on DAVE Embedded System mirror server. There you can find a sub directory for each version of this development kit.
U-boot performs 2-stage bootloader providing two files: boot.bin and u-boot.img. Both two files must be stored into SD card using dd command.
A summary of images with a brief description can be found into the table below:
| Image | BELK version 4.1.5 |
|---|---|
| Platform | BORAXEVB |
| bootscript | boot.scr |
| SPL | boot.bin |
| u-boot | u-boot.img |
| Linux kernel | uImage |
| Device tree | bora.dtb |
Release types[edit | edit source]
BELK release type can be:
- Major, when substantial changes are applied to the BSP (eg: major kernel version upgrades) or to the development kit (eg: new features, build system updates, ..). This usually means that a new DVDK is created for the BELK release
- Maintenance, when minor updates and bug fixes are introduced. This usually means that the DVDK remains the same provided with the previous major version, and only an update of the source tree repositories (and the tftp binaries) is required
As an example, BELK 4.1.0 is a maintenance release, so it provides the DVDK released with the 4.0.0 major release; customers can easily upgrade to the 1.1.0 release by updating the software components as described in Synchronizing git repositories.
